#pragma region License
/*******************************************************************************
Copyright (c) 2005-2009 David Williams

This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:

    1. The origin of this software must not be misrepresented; you must not
    claim that you wrote the original software. If you use this software
    in a product, an acknowledgment in the product documentation would be
    appreciated but is not required.

    2. Altered source versions must be plainly marked as such, and must not be
    misrepresented as being the original software.

    3. This notice may not be removed or altered from any source
    distribution. 	
*******************************************************************************/
#pragma endregion

#ifndef __PolyVox_IndexedSurfacePatch_H__
#define __PolyVox_IndexedSurfacePatch_H__

#include <vector>
#include <set>

#include "PolyVoxImpl/CPlusPlusZeroXSupport.h"

#include "PolyVoxForwardDeclarations.h"
#include "Region.h"
#include "SurfaceVertex.h"
#include "PolyVoxImpl/TypeDef.h"

namespace PolyVox
{
	class LodRecord
	{
	public:
		int beginIndex;
		int endIndex; //Let's put it just past the end STL style
	};

	class POLYVOXCORE_API IndexedSurfacePatch
	{
	public:
	   IndexedSurfacePatch();
	   ~IndexedSurfacePatch();	   

	   const std::vector<uint32_t>& getIndices(void) const;
	   uint32_t getNoOfIndices(void) const;
	   uint32_t getNoOfNonUniformTrianges(void) const;
	   uint32_t getNoOfUniformTrianges(void) const;
	   uint32_t getNoOfVertices(void) const;	   
	   std::vector<SurfaceVertex>& getRawVertexData(void); //FIXME - this should be removed
	   const std::vector<SurfaceVertex>& getVertices(void) const;

	   void addTriangle(uint32_t index0, uint32_t index1, uint32_t index2);
	   uint32_t addVertex(const SurfaceVertex& vertex);
	   void clear(void);
	   const bool isEmpty(void) const;

	   void smoothPositions(float fAmount, bool bIncludeEdgeVertices = false);
	   void sumNearbyNormals(bool bNormaliseResult = true);

	   POLYVOX_SHARED_PTR<IndexedSurfacePatch> extractSubset(std::set<uint8_t> setMaterials);

	   void generateAveragedFaceNormals(bool bNormalise, bool bIncludeEdgeVertices = false);

	   //Vector3DInt32 m_v3dRegionPosition; //FIXME - remove this?

	   /*void growMaterialBoundary(void);
	   int countMaterialBoundary(void);*/

	   void makeProgressiveMesh(void);

	   Region m_Region;

	   int32_t m_iTimeStamp;

	   int32_t m_iNoOfLod0Tris;
	
	public:		
		std::vector<uint32_t> m_vecTriangleIndices;
		std::vector<SurfaceVertex> m_vecVertices;

		std::vector<LodRecord> m_vecLodRecords;

		//The set of materials which are in this mesh. Only those materials
		//which cover a whole triangle are counted. Materials which only
		//exist on a material boundary do not count.
		std::set<uint8_t> m_mapUsedMaterials;
	};	
}

#endif /* __IndexedSurfacePatch_H__ */